Remove separate part for @signalapp/better-sqlite3

[jnsgruk]

We currently build the @signalapp/better-sqlite3 NPM package manually because the package has a build process that fetches artifacts in a non-proxy aware way.

I have a pull request against the upstream package to "fix" this behaviour, but it has yet to be merged. Once it does merge, it'll likely take a couple of Signal Desktop releases to land. signalapp/better-sqlite3#12

signal-desktop/snap/snapcraft.yaml

Lines 66 to 80 in 53f7bef

	# NodeJS dependency which uses a non-proxy aware fetch during its build.
	# The purpose of this part is to introduce proxy awareness so the build succeeds in LP.
	better-sqlite3:
	plugin: dump
	source: https://registry.npmjs.org/@signalapp/better-sqlite3/-/better-sqlite3-8.6.0.tgz
	override-build: |
	# Patch the file; inject a proxy agent at the top of the file
	cat <<-EOF > deps/download.js
	const { HttpsProxyAgent } = require('https-proxy-agent');
	const agent = new HttpsProxyAgent('${https_proxy:-}');
	$(cat deps/download.js)
	EOF
	# Ensure the fetch actually uses the agent
	sed -i 's|https.get(URL, async (res)|https.get(URL, { agent }, async (res)|g' deps/download.js